223978480 has 80 divisors (see below), whose sum is σ = 571392000. Its totient is φ = 80974080.

The previous prime is 223978471. The next prime is 223978487. The reversal of 223978480 is 84879322.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×223978480² = 100332719006220800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223978487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174481 + ... + 175759.

It is an arithmetic number, because the mean of its divisors is an integer number (7142400).

Almost surely, 2^223978480 is an apocalyptic number.

223978480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 223978480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285696000).

223978480 is an abundant number, since it is smaller than the sum of its proper divisors (347413520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

223978480 is a wasteful number, since it uses less digits than its factorization.

223978480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1502 (or 1496 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 223978480 is about 14965.9105970870. The cubic root of 223978480 is about 607.2983451229.

The spelling of 223978480 in words is "two hundred twenty-three million, nine hundred seventy-eight thousand, four hundred eighty".